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HumansArsenic-based life finding fails follow-up
Tests see no evidence to confirm a bold 2010 claim that some microbes can incorporate the normally toxic element into their cellular machinery.
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SpaceSpacecraft captures dust from interstellar wind
Measurements of the particles reveal clues about the composition of space beyond the solar system.
By Nadia Drake -
Health & MedicineBird flu leaves tracks in brain
H5N1 infection might make survivors vulnerable to Parkinson’s or other neurological disorders, a study in mice indicates.
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LifeNo sleep, no problem, but keep the grub coming
A naturally occurring strain of fruit fly can thrive without slumber, but succumbs more quickly to starvation.
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HumansPredatory pythons shift Everglades ecology
As invasive snakes expand territory, some mammal populations drop by more than 90 percent within a decade.
By Janet Raloff -
LifeLong-lived people distinguished by DNA
A controversial study finds genetic signatures that may be able to identify people with the best chance of living to 100 or beyond.
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PsychologyFighting willpower’s catch-22
Avoiding daily temptations works better than using willpower, which has oddly unintended effects.
By Bruce Bower -
HumansCatching a mood on Facebook
Happiness and other feelings filter among online friends through their brief posts.
By Bruce Bower -
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Letters
Finding parasitic behavior Two adjacent stories, both by Tina Hesman Saey, at first glance may appear to be unrelated but in actuality show examples of a well-known phenomenon: parasites adversely affecting the behavior of the host so that the parasite can get to its next victim. The article “Belly bacteria can boss the brain” (SN: […]
By Science News